I've been using one of my existing perl programs to test my VMS MySQL installation, and I noticed a significant performance difference between the VMS MySQL server and my old Linux MySQL server. After some investigation, I noticed that the VMS server didn't insert a single query into the query cache. The same test set achieved a ~97% cache insert rate on Linux. Both servers are using the exact same query cache configuration (included below). I also tried explicit 'SELECT SQL_CACHE...' statements from the client binary included in the VMS kit, but still no cache inserts.